MINNEAPOLIS — The Minnesota Vikings will suspend special teams co-ordinator Mike Priefer without pay for three games this season and donate $100,000 to lesbian, gay, bisexual and transgender rights groups, in response to former punter Chris Kluwe’s allegations of anti-gay slurs and taunts made by Priefer.

The Vikings announced the punishment Friday as part of a summary of findings by outside lawyers hired in January to investigate Kluwe’s accusations, which included a claim he was released because of his gay-rights advocacy.

The Vikings said Priefer’s ban could be reduced to two games at their discretion, provided he attends individualized anti-harassment, diversity and sexual-orientation sensitivity training.

Such education has been required for all Vikings employees, coaches and players on an annual basis for the past several years, the team said, and the improvements for the programs will be considered.

Chris Madel, a former Justice Department attorney, and Eric Magnuson, a former chief justice of the Minnesota Supreme Court, from the Minneapolis-based law firm Robins, Kaplan, Ciresi and Miller recently presented their report to the Vikings after interviewing 31 people and examining 121 gigabytes of data.

Priefer was questioned three times. According to a 29-page analysis of the investigation by employment law consultants Littler Mendelson and Donald Prophete, commissioned by the Vikings and released Friday, Priefer initially denied making a remark Kluwe alleged about “putting all the gays on an island and nuking it” but later acknowledged he might have.

Long snapper Cullen Loeffler told the investigators he heard the same comment Kluwe did, but that he assumed Priefer was joking.

In a statement from the team, Priefer apologized to owners Mark Wilf and Zygi Wilf, the organization, the fans, his family, the LGBT community, Kluwe and “anyone else that I offended with my insensitive remark.”

Added Priefer, who was hired by the Vikings in 2011: “I regret what has occurred and what I said. I am extremely sorry, but I will learn from this situation and will work on educating others to create more tolerance and respect.”

Kluwe, however, said Friday he still intends to sue the team for discrimination, against his gay-rights activism and agnostic beliefs, as well as defamation and wrongful interference of his contract. His attorney, Clayton Halunen, said the complaint will be filed in Hennepin County District Court as early as Monday, seeking $10 million in damages.

“Here we have this company, this Minnesota company who’s getting $400 million out of taxpayers’ funds to build the stadium, and yet they are violating state law by engaging in discriminatory conduct, and that is unacceptable,” Halunen said, calling the response by the Vikings to the report “a mockery.”

Kluwe said he was willing to settle for a $1 million donation to LGBT causes, a suspension of Priefer between four and eight games in accordance with NFL and team personal conduct policy, and a public release of the full report. The Vikings declined those conditions.

NFL spokesman Greg Aiello said: “We support our teams enforcing their workplace policies and commend the Wilfs for doing a thorough investigation and taking appropriate steps in response to the findings.”

The Wilf brothers, in a joint statement provided by the team, said Madel and Magnuson “were in full control of the investigation at all times.” They said they’re pleased Mendelson and Prophete “concluded that there was no wrongdoing” by the Vikings in releasing Kluwe.

“We are very disappointed with some of the findings contained within the report,” the Wilfs said. “As we have said in the past, we consistently strive to create — and believe we have — a supportive, respectful and accepting environment for our players, coaches and staff, and we strongly disassociate the club from the statement that Coach Priefer made. Coach Priefer is a good man, and we know that he deeply regrets the comment. We do not believe that this error in judgment should define him.”

In his scathing article posted Jan. 2 on the website Deadspin.com that spelled out the allegations, Kluwe said Zygi Wilf expressed support for his gay-rights advocacy.

Also in the analysis of the investigation released by Mendelson and Prophete:
— Though Loeffler corroborated Kluwe’s claim of the “nuke it” comment by Priefer, none of the other players, coaches or staff said they heard any slurs.

— Vikings officials were nearly unanimous in deciding Kluwe’s 2012 season was substandard, and the report said Priefer actually gave Kluwe a higher grade than any of the front-office evaluators. The Vikings have maintained the move to cut Kluwe was strictly football-based after they drafted Jeff Locke in the fifth round and Kluwe was due to make $1.45 million in the 2013 season at age 31.

— The investigators asked former Chicago general manager Jerry Angelo and former NFL punter Craig Hentrich to analyze Kluwe’s performance as well, and Hentrich gave Kluwe a “C” grade overall.